De in parallel with AC

∴BD/CD=BE/AE

DH is parallel to BE∴DH/BE=PD/PE.

∫ds is parallel to AE∴DS/AE=PD/PE.

∴DH/BE= DS/AE

∴BE/AE=HD/SD

∴HD/SD= BD/CD

∫∠BDH =∠ CDS again.

∴△BDH is similar to△△△ CDs.

∴BP parallel to the Chief Secretary for Administration